Flood — Union, Pennsylvania

2023-08-07 · near Swengel, Union, Pennsylvania

Event narrative

Water flowing across the roadway led to the closure of Route 45 west of Mifflinburg.

Wider weather episode

High CAPE (>2500 J/kg) and strong speed and directional shear contributed to a significant severe weather episode across south-central Pennsylvania during the afternoon and evening of August 7, 2023. Of note, a significant bow echo produced widespread wind damage and a trio of weak (EF0-EF1) tornadoes across southern York and Lancaster Counties.

View location on OpenStreetMap → (40.9060, -77.1145)

Source: NOAA Storm Events Database, event_id 1119669. Narrative written by the NWS forecast office that issued the report.